{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0xc90d2cd2aa3cb6b703ee0ceecb386ef9bcfad614e2daf1f2ec353d8c41ee056e",
    "signature": "0x543a8e2d33963c62cd32b96e93807ce3a9f337d81d6895f280e40b21187629214a9deed84d4dd57b8924ddfbbcfeeadfcab2e0973fa26b653fc4eb44fbebb2381c",
    "signer": "0x4C057f8cAd0fd07c386B1D2fEb86B077e73DeD49",
    "userId": "254245"
  }
}